Measurement of the associated production of a Higgs boson with a top quark pair in final states with electrons, muons and hadronic tau leptons in data recorded in 2017 at 13 TeV
Abstract
The production of a Higgs Boson associated with a top quark pair (ttH) is measured in the final states with electrons, muons and hadronic taus. Events are selected from proton-proton collisions with 13 TeV center-of-mass energy, recorded by the CMS experiment in 2017 corresponding to an integrated luminosity of 41.5 /fb. The analysis sensitivity is optimized by using machine learning and matrix element methods. The observed (expected) ttH production rated is 0.75+0.46-0.43 (1.00+0.39-0.35) times the expected rate in the standard model. This corresponds to an observed (expected) significance of 1.7 (2.9) sigma. These results are in addition combined with those previously obtained from the data collected in 2016, corresponding to an integrated luminosity of 35.9 /fb. The observed (expected) signal rate for the combined fit is 0.96+0.34-0.31 (1.00+0.30-0.27) times the expected rate in the standard model, which corresponds to an observed (expected) significance of 3.2 (4.0) sigma.
- Publication:
-
APS April Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..APRJ17006T